Angiosperms hloov zuj zus thaum lub sijhawm Cretaceous lig, txog 125-100 lab xyoo dhau los. … Angiosperms tsis hloov zuj zus los ntawm gymnosperms, tab sis hloov zuj zus mus rau tib lub gymnosperms; Txawm li cas los xij, nws tseem tsis tau paub meej tias hom nroj tsuag twg ua rau nce rau angiosperms.
Thaum twg gymnosperms evolve?
Lub gymnosperms originated txog 319 lab xyoo dhau los, nyob rau hauv lig Carboniferous.
Puas yog gymnosperms evolve ua ntej?
Gymnosperms yog thawj cov noob nroj tsuag tau hloov zuj zus. Lub cev zoo li cov noob tau pom nyob hauv pob zeb ntawm Upper Devonian Series (kwv yees li 382.7 lab rau 358.9 lab xyoo dhau los).
Yuav ua li cas ua ntej angiosperms?
Txawm li cas los xij, xyoo 2018, cov kws tshawb fawb tau tshaj tawm qhov kev tshawb pom ntawm fossil pajlos ntawm kwv yees li 180 lab xyoo dhau los, 50 lab xyoo ua ntej tshaj qhov kev xav ua ntej. … Lub luag haujlwm tseem ceeb ntawm lub paj yog kev yug me nyuam, uas, ua ntej evolution ntawm paj thiab angiosperms, yog txoj hauj lwm ntawm microsporophylls thiab megasporophylls.
Thaum twg angiosperms evolve?
Yog li, qhov kev hloov pauv uas tsim cov nroj tsuag uas thaum kawg tau lees paub tias yog cov angiosperms yuav tsum tau tshwm sim thaum lub sijhawm lub Triassic, Jurassic, thiab thaum ntxov Cretaceous lub sijhawm (uas ncua los ntawm txog 252 lab rau 100.5 lab xyoo dhau los).
